F150 Fog Light Switch with Auto Lamps Into a
96-99 SHO

03/20/2009

This document outlines the procedure for installing a
1997-2004(?) Ford F-150 headlight switch with fog lights and AutoLamps into a
1996-99 Ford Taurus. When complete, The switch will active the foglights by
pulling the knob out, and will retain full Autolamp functionality. The
foglights will be illuminated only with the low beams activated, and will
automatically shut off when the high beams are activated. NOTE: there is an
optional section at the end of this document that details how to modify the
switch faceplate so that foglight operation can be controlled automatically with
the AutoLamp system.

1.Removal of
Taurus Headlamp Switch

a.Disconnect battery

b.Turn headlamp switch to “ON” position and pull out knob as shown:

c.Insert a straightened paperclip into hole at the base of the knob:

d.Press paperclip into knob while pulling on knob; knob should pop off.

e.Rotate knob 180° and loosely put back on.

f.Turn knob counter-clockwise, until knob is vertical again (white
indicator is pointing down):

iii.For the other required plug, take one of the smaller plugs out of the
black square harness. The only extra step required is to pull out the red clip
(see picture below) from the harness before pressing on the retaining clip and
popping out the plug. This plug you’ll place in the only open receiver on the
Taurus black square harness (top center).

5.Wiring

a.See diagrams below for wiring. Power from headlight lowbeams goes to
both pin 86 on the relay and to the wire in the flat, rectangular gray harness
on the headlight switch. Pin 85 on the relay goes to the wire in the black
rectangular harness on the headlight switch. Pin 30 on the relay comes from a
fused, always-on power source (I ran directly from the battery), and pin 87 goes
to the fog lights.

6.Completed

a.Foglights off:

b.Foglights on:

7.OPTIONAL –
Modifying Switch to use Fog Lights with AutoLamps (Switch in OFF Position)

a.If you use AutoLamps to turn your headlights on for you and you don’t
want to mess with having to turn the switch to ON and pulling out the knob every
time you want to use the fog lights, perform this mod.

b.When the faceplate is off the headlight switch, look on the backside of
the plastic section of the faceplate that is behid the knob, and you’ll see
several detents and a ramp:

c.Simply use a dremel tool or similar grinder to remove this ramp:

d.Now when you finish the install, simply leave the knob in the OFF
position and pull it out. The fog lights will automatically turn on when the
low beams turn on, and shut off when the low beams shut off.